55539849 has 16 divisors (see below), whose sum is σ = 76563008. Its totient is φ = 35785152.

The previous prime is 55539823. The next prime is 55539857. The reversal of 55539849 is 94893555.

It is a happy number.

It is not a de Polignac number, because 55539849 - 2⁷ = 55539721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55539798 and 55539807.

It is not an unprimeable number, because it can be changed into a prime (55539859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15834 + ... + 19020.

It is an arithmetic number, because the mean of its divisors is an integer number (4785188).

Almost surely, 2^55539849 is an apocalyptic number.

It is an amenable number.

55539849 is a deficient number, since it is larger than the sum of its proper divisors (21023159).

55539849 is a wasteful number, since it uses less digits than its factorization.

55539849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384.

The product of its digits is 972000, while the sum is 48.

The square root of 55539849 is about 7452.5062227414. The cubic root of 55539849 is about 381.5354517595.

It can be divided in two parts, 555 and 39849, that added together give a palindrome (40404).

The spelling of 55539849 in words is "fifty-five million, five hundred thirty-nine thousand, eight hundred forty-nine".